These cat trees are nice although quite heavy once assembled.  The bad part about assembly is that the holes are not aligned well nor drilled deep enough so that screwing in the nails was hard and we could not screw them all the way in.  We have assembled one tree so far.  Assuming we will run into similar issues with the second..  Appearance wise these are very nice.  The sides do NOT align (note there is space between them).  I am hoping my cats like them.  For now, they are not attached to the wall.